| Cyclin D1 (CCND1) plays an essential role in regulating the progress of the cell cycle from G1 to S phase.
There is a common c.870G>A polymorphism in the CCND1
gene. The aim of this study was to investigate the association
of CCND1 gene c.870G>A polymorphism with breast cancer
risk in a case-control study, which followed by a meta-analysis
and an in silico analysis. Three hundred and thirty-five subjects composed of 174 women with breast cancer and 161
healthy controls were included in the case-control study.
CCND1 gene c.870G>A genotyping was performed by
PCR-RFLP. Meta-analysis was done for 14 studies composed
of 7281 cases and 6820 controls. Some bioinformatics tools
were applied to investigate the effects of c.870G>A on the
mRNA splicing and structure. Our data obtained from casecontrol study revealed that GA genotype (OR: 1.89, 95%CI:
1.12–3.17, p = 0.017), AA genotype (OR: 1.95, 95%CI: 1.08–
3.53, p = 0.027), and A allele (OR: 1.44, 95%CI: 1.06–1.95,
p = 0.019) were significantly associated with breast cancer
risk. The results of meta-analysis showed a significant association between CCND1 c.870G>A polymorphism and breast
cancer risk, especially in Caucasian population. In silico analysis revealed that c.870G>A transition affect CCND1 mRNA
splicing and secondary structure. |